牛磺酸对黄河鲤鱼生长性能和消化酶活性的影响

研究了日粮中添加牛磺酸对黄河鲤鱼(Cyprinuscarpio)生长性能和消化酶活性的影响。选用体重121g左右的黄河鲤鱼450尾,随机分为5个处理组,每组90尾,设3个重复,每个重复30尾,在日粮中添加0、400、800、1200、1600mg/kg的牛磺酸,以0mg/kg添加组为对照组,试验期56d。结果表明:牛磺酸促进黄河鲤鱼生长,添加量为800mg/kg时,生物学综合评价最高、饵料系数最低(P<0.05);添加适宜牛磺酸(800-1200mg/kg),显著提高肝胰脏和肠道蛋白酶、脂肪酶、淀粉酶的活性(P<0.05)。结果提示,黄河鲤鱼日粮中牛磺酸的最适添加量为800mg/kg。

Effects of Taurine on Growth Performance and Digestive Enzyme Activity of Carp

To study the nutritional effects of diets adding taurine (0 , 400 , 800 , 1 200 , 1 600 mg/ kg , respectively) on growth performance and digestive enzyme activities of carp, four hundred and fifty carps with about 121g body weight were used. Carps were randomly divided into treatments which contained 3 replicates and 30 carps for each replicate. The basal diet which was added 0 mg taurine per kilogram was used as control group, and the experiment lasted for 56 days. The results showed that growth performance of carps were remarkably increased than control group. At 800mg/ kg level , biology synthesis evaluate(BSE) got the maximum and feed coefficient (FC) got minimum ( P< 0.05) ; In the adding level of taurine at 800~1200mg/ kg , activities of protease, lipase and amylase in hepatopancreas and intestine of carps were remarkably enhanced ( P< 0.05) . According to above results, the optimum dietary taurine level to caps was 800mg/ kg.